diff --git a/Fat.h b/Fat.h
index f056090..e02d88c 100644
--- a/Fat.h
+++ b/Fat.h
@@ -22,8 +22,9 @@
 class Fat {
 public:
     static int check(const char *fsPath);
-    static int doMount(const char *fsPath, const char *mountPoint, bool ro,
-                       bool remount, int ownerUid, int ownerGid, int permMask,
+    static int doMount(const char *fsPath, const char *mountPoint,
+                       bool ro, bool remount, bool executable,
+                       int ownerUid, int ownerGid, int permMask,
                        bool createLost);
     static int format(const char *fsPath, unsigned int numSectors);
 };